create spec files for pitches_controller and pitch model
write tests for pitch model. test for titleize, presence of title & content & score, functionality of score calculation,  upvote and downvote
Fix syntax error in pitch_spec
resolve error by calling upvote and downvote methods in before block
write tests in pitches_controller_spec to test for successful HTTP responses from index, show, and new pages
implement validations for presences of title and content. create methods for upvote, downvote, and titleize functionality
Default rspec to use documentation format
Pitch score defaults to 0
Show all pitches on root_path and /pitches